20779990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{26987}}^1$

素因数の和:27012

約数の個数: 32

約数和(自身を含む): 46635264

約数和(自身を除く): 25855274

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 110, 154, 385, 770, 26987, 53974, 134935, 188909, 269870, 296857, 377818, 593714, 944545, 1484285, 1889090, 2077999, 2968570, 4155998, 10389995, 20779990]

約数ペア:

[(1, 20779990), (2, 10389995), (5, 4155998), (7, 2968570), (10, 2077999), (11, 1889090), (14, 1484285), (22, 944545), (35, 593714), (55, 377818), (70, 296857), (77, 269870), (110, 188909), (154, 134935), (385, 53974), (770, 26987)]